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action.yml
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action.yml
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name: Build Docker image
description: Build Docker image from cache
inputs:
image:
description: 'Image name'
required: false
default: ${{ github.repository }}
key:
description: 'Cache key'
required: false
default: ${{ github.workflow }}
dockerfile:
description: 'Path to dockerfile'
required: false
default: Dockerfile
context:
description: 'Directory to build from'
required: false
default: .
docker-args:
description: 'Arguments to pass to docker build'
required: false
default: ''
prune-after:
description: 'Amount of time after which images get pruned'
required: false
default: '260h'
buildkit:
description: 'Whether to use Docker BuildKit'
required: false
default: 'false'
outputs:
tagged-image:
description: 'Created image name with tag'
value: ${{ steps.prep.outputs.tagged-image }}
tag:
description: 'Tag of the created image'
value: ${{ steps.prep.outputs.tag }}
runs:
using: composite
steps:
- uses: myparcelnl/actions/format-string@v4
id: args
with:
mode: 'args'
string: ${{ inputs.docker-args }}
- name: 'Prepare'
id: prep
shell: bash
env:
IMAGE: ${{ inputs.image }}
ARGS: ${{ steps.docker-args.outputs.string }}}
#language=bash
run: |
TAG=$(echo $GITHUB_SHA | head -c7)
echo "tag=${TAG}" >> $GITHUB_OUTPUT
echo "tagged-image=${IMAGE}:${TAG}" >> $GITHUB_OUTPUT
- uses: satackey/action-docker-layer-caching@v0.0.11
with:
key: ${{ inputs.key }}-{hash}
restore-keys: |
${{ inputs.key }}-
- name: 'Build image'
shell: bash
env:
ARGS: ${{ steps.args.outputs.string }}
TAG: ${{ steps.prep.outputs.tag }}
REF: ${{ github.ref }}
FILE: ${{ inputs.dockerfile }}
CONTEXT: ${{ inputs.context }}
DOCKER_BUILDKIT: ${{ inputs.buildkit == 'true' && '1' || '0' }}
#language=bash
run: |
docker build $ARGS \
--label "ref=$REF" \
--label "tag=$TAG" \
--tag "$TAGGED_IMAGE" \
--file "$FILE" \
"$CONTEXT"
- name: 'Prune previous images'
shell: bash
env:
TAG: ${{ steps.prep.outputs.tag }}
ARGS: ${{ steps.args.outputs.string }}
REF: ${{ github.ref }}
#language=bash
run: |
docker image prune \
--all \
--force \
--filter "label=ref=$REF" \
--filter "label=args=$ARGS" \
--filter "label!=tag=$TAG"
- name: 'Prune stale images'
shell: bash
env:
PRUNE_AFTER: ${{ inputs.prune-after }}
#language=bash
run: |
docker image prune \
--force \
--filter "until=$PRUNE_AFTER"